pytest-dev / pytest-dev/pluggy

tracing: store called hook_impls

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discussion enhancement
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Description

With tracing I think it would be good to know where the result is coming from (firstresult=True), and/or which hook_impls have been called in general.

But this could also be useful to know in general, so storing it (optionally?) on the _Result seems like a good idea to me.
It should probably not be full references (except for when tracing is enabled, but that's not easy to know when creating the _Result it seems), but only the plugin_name by default.

Related code: https://github.com/pytest-dev/pluggy/blob/a5130ac87a71865192db3959d2e1e1ac41daaca7/src/pluggy/callers.py#L195-L198

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Research direction

Start with src/pluggy/callers.py around lines 195-198 and trace how _Result is created and consumed. Then inspect the tracing path and existing hook_impl handling to clarify whether storage is optional and what information it should retain. Done requires an agreed scope and observable behavior for identifying called implementations.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
tooling
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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